Make water harvesting and solar street lights compulsory in all metro cities of India.

Water harvesting in metro cities will enhance underground water storage reducing the temperatures of cities especially in summer. Also with this the need for using river and reservoir water for cities will reduce and it can be utilized for farming. Thirdly with solar electricity generation in every building, metro cities will be electrically self sifgicient. This can help india generate more electric supply for the interiors of india thatvis still in dark.